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10.5.3.1. Comparing Temperature Readouts of Arria® 10 External TSD and Arria® 10 Internal Temperature Sensor
When comparing between the temperature readouts of the Arria® 10 external temperature sensing diode (TSD) and the Arria® 10 internal temperature sensor, consider the temperature error contributed by your external TSD implementation at board level such as accuracy of the temperature sensing chip, ideality factor mismatch, and series resistance. For example, the Arria® 10 internal temperature sensor has an accuracy of +/-5°C and total errors from external TSD implementation is +/-4°C. The worst case temperature variation could go up to +/- 9deg °C with sum of both errors.